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CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1

Open Information Security Foundation Suricata prior to version 4.1.3 is affected by: Denial of Service - TCP/HTTP detection bypass. The impact is: An attacker can evade a signature detection with a specialy formed sequence of network packets. The component is: detect.c (https://github.com/OISF/suricata/pull/3625/commits/d8634daf74c882356659addb65fb142b738a186b). The attack vector is: An attacker can trigger the vulnerability by a specifically crafted network TCP session. The fixed version is: 4.1.3. • https://github.com/OISF/suricata/pull/3625 https://github.com/OISF/suricata/pull/3625/commits/d8634daf74c882356659addb65fb142b738a186b https://redmine.openinfosecfoundation.org/issues/2770 • CWE-347: Improper Verification of Cryptographic Signature •

CVSS: 7.5EPSS: 0%CPEs: 4EXPL: 0

Open Information Security Foundation Suricata prior to version 4.1.2 is affected by: Denial of Service - DNS detection bypass. The impact is: An attacker can evade a signature detection with a specialy formed network packet. The component is: app-layer-detect-proto.c, decode.c, decode-teredo.c and decode-ipv6.c (https://github.com/OISF/suricata/pull/3590/commits/11f3659f64a4e42e90cb3c09fcef66894205aefe, https://github.com/OISF/suricata/pull/3590/commits/8357ef3f8ffc7d99ef6571350724160de356158b). The attack vector is: An attacker can trigger the vulnerability by sending a specifically crafted network request. The fixed version is: 4.1.2. • https://github.com/OISF/suricata/pull/3590/commits/11f3659f64a4e42e90cb3c09fcef66894205aefe https://github.com/OISF/suricata/pull/3590/commits/8357ef3f8ffc7d99ef6571350724160de356158b https://redmine.openinfosecfoundation.org/issues/2736 • CWE-20: Improper Input Validation •

CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0

A buffer over-read issue was discovered in Suricata 4.1.x before 4.1.4. If the input of the decode-mpls.c function DecodeMPLS is composed only of a packet of source address and destination address plus the correct type field and the right number for shim, an attacker can manipulate the control flow, such that the condition to leave the loop is true. After leaving the loop, the network packet has a length of 2 bytes. There is no validation of this length. Later on, the code tries to read at an empty position, leading to a crash. • https://lists.openinfosecfoundation.org/pipermail/oisf-announce https://suricata-ids.org/2019/04/30/suricata-4-1-4-released • CWE-125: Out-of-bounds Read •

CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0

The ProcessMimeEntity function in util-decode-mime.c in Suricata 4.x before 4.0.6 allows remote attackers to cause a denial of service (segfault and daemon crash) via crafted input to the SMTP parser, as exploited in the wild in November 2018. La función ProcessMimeEntity en util-decode-mime.c en Suricata, desde la versión 4.x hasta la 4.0.5, permite que los atacantes remotos provoquen una denegación de servicio (segfault y cierre inesperado del demonio) mediante entradas manipulada en el analizador SMTP, tal y como se explotó "in the wild" en noviembre de 2018. • https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-November/016316.html https://lists.openinfosecfoundation.org/pipermail/oisf-users/2018-October/016227.html https://redmine.openinfosecfoundation.org/issues/2658#change-10374 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •